/*
 * Copyright (c) 1993, 1994, 1997
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Header: /tcpdump/master/libpcap/Win32/Include/ip6_misc.h,v 1.5 2006-01-22 18:02:18 gianluca Exp $ (LBL)
 */

/*
 * This file contains a collage of declarations for IPv6 from FreeBSD not present in Windows
 */

#include <winsock2.h>

#include <ws2tcpip.h>

#ifndef __MINGW32__
    #define IN_MULTICAST( a )    IN_CLASSD( a )
#endif

#define IN_EXPERIMENTAL( a )     ( ( ( ( u_int32_t ) ( a ) ) & 0xf0000000 ) == 0xf0000000 )

#define IN_LOOPBACKNET    127

#if defined( __MINGW32__ ) && defined( DEFINE_ADDITIONAL_IPV6_STUFF )
/* IPv6 address */
    struct in6_addr
    {
        union
        {
            u_int8_t u6_addr8[ 16 ];
            u_int16_t u6_addr16[ 8 ];
            u_int32_t u6_addr32[ 4 ];
        }
        in6_u;
    #define s6_addr                  in6_u.u6_addr8
    #define s6_addr16                in6_u.u6_addr16
    #define s6_addr32                in6_u.u6_addr32
    #define s6_addr64                in6_u.u6_addr64
    };

    #define IN6ADDR_ANY_INIT         { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
    #define IN6ADDR_LOOPBACK_INIT    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
#endif /* __MINGW32__ */


#if ( defined _MSC_VER ) || ( defined( __MINGW32__ ) && defined( DEFINE_ADDITIONAL_IPV6_STUFF ) )
    typedef unsigned short sa_family_t;
#endif


#if defined( __MINGW32__ ) && defined( DEFINE_ADDITIONAL_IPV6_STUFF )

    #define __SOCKADDR_COMMON( sa_prefix ) \
    sa_family_t sa_prefix ## family

/* Ditto, for IPv6.  */
    struct sockaddr_in6
    {
        __SOCKADDR_COMMON( sin6_ );
        u_int16_t sin6_port;       /* Transport layer port # */
        u_int32_t sin6_flowinfo;   /* IPv6 flow information */
        struct in6_addr sin6_addr; /* IPv6 address */
    };

    #define IN6_IS_ADDR_V4MAPPED( a )                                                       \
    ( ( ( ( u_int32_t * ) ( a ) )[ 0 ] == 0 ) && ( ( ( u_int32_t * ) ( a ) )[ 1 ] == 0 ) && \
      ( ( ( u_int32_t * ) ( a ) )[ 2 ] == htonl( 0xffff ) ) )

    #define IN6_IS_ADDR_MULTICAST( a )    ( ( ( u_int8_t * ) ( a ) )[ 0 ] == 0xff )

    #define IN6_IS_ADDR_LINKLOCAL( a ) \
    ( ( ( ( u_int32_t * ) ( a ) )[ 0 ] & htonl( 0xffc00000 ) ) == htonl( 0xfe800000 ) )

    #define IN6_IS_ADDR_LOOPBACK( a )                                               \
    ( ( ( u_int32_t * ) ( a ) )[ 0 ] == 0 && ( ( u_int32_t * ) ( a ) )[ 1 ] == 0 && \
      ( ( u_int32_t * ) ( a ) )[ 2 ] == 0 && ( ( u_int32_t * ) ( a ) )[ 3 ] == htonl( 1 ) )
#endif /* __MINGW32__ */

#define ip6_vfc                  ip6_ctlun.ip6_un2_vfc
#define ip6_flow                 ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen                 ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt                  ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim                 ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops                 ip6_ctlun.ip6_un1.ip6_un1_hlim

#define nd_rd_type               nd_rd_hdr.icmp6_type
#define nd_rd_code               nd_rd_hdr.icmp6_code
#define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
#define nd_rd_reserved           nd_rd_hdr.icmp6_data32[ 0 ]

/*
 *	IPV6 extension headers
 */
#define IPPROTO_HOPOPTS          0   /* IPv6 hop-by-hop options	*/
#define IPPROTO_IPV6             41  /* IPv6 header.  */
#define IPPROTO_ROUTING          43  /* IPv6 routing header		*/
#define IPPROTO_FRAGMENT         44  /* IPv6 fragmentation header	*/
#define IPPROTO_ESP              50  /* encapsulating security payload */
#define IPPROTO_AH               51  /* authentication header	*/
#define IPPROTO_ICMPV6           58  /* ICMPv6			*/
#define IPPROTO_NONE             59  /* IPv6 no next header		*/
#define IPPROTO_DSTOPTS          60  /* IPv6 destination options	*/
#define IPPROTO_PIM              103 /* Protocol Independent Multicast.  */

#define  IPV6_RTHDR_TYPE_0       0

/* Option types and related macros */
#define IP6OPT_PAD1              0x00 /* 00 0 00000 */
#define IP6OPT_PADN              0x01 /* 00 0 00001 */
#define IP6OPT_JUMBO             0xC2 /* 11 0 00010 = 194 */
#define IP6OPT_JUMBO_LEN         6
#define IP6OPT_ROUTER_ALERT      0x05 /* 00 0 00101 */

#define IP6OPT_RTALERT_LEN       4
#define IP6OPT_RTALERT_MLD       0 /* Datagram contains an MLD message */
#define IP6OPT_RTALERT_RSVP      1 /* Datagram contains an RSVP message */
#define IP6OPT_RTALERT_ACTNET    2 /* contains an Active Networks msg */
#define IP6OPT_MINLEN            2

#define IP6OPT_BINDING_UPDATE    0xc6 /* 11 0 00110 */
#define IP6OPT_BINDING_ACK       0x07 /* 00 0 00111 */
#define IP6OPT_BINDING_REQ       0x08 /* 00 0 01000 */
#define IP6OPT_HOME_ADDRESS      0xc9 /* 11 0 01001 */
#define IP6OPT_EID               0x8a /* 10 0 01010 */

#define IP6OPT_TYPE( o )    ( ( o ) & 0xC0 )
#define IP6OPT_TYPE_SKIP         0x00
#define IP6OPT_TYPE_DISCARD      0x40
#define IP6OPT_TYPE_FORCEICMP    0x80
#define IP6OPT_TYPE_ICMP         0xC0

#define IP6OPT_MUTABLE           0x20


#if defined( __MINGW32__ ) && defined( DEFINE_ADDITIONAL_IPV6_STUFF )
    #ifndef EAI_ADDRFAMILY
        struct addrinfo
        {
            int ai_flags;              /* AI_PASSIVE, AI_CANONNAME */
            int ai_family;             /* PF_xxx */
            int ai_socktype;           /* SOCK_xxx */
            int ai_protocol;           /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
            size_t ai_addrlen;         /* length of ai_addr */
            char * ai_canonname;       /* canonical name for hostname */
            struct sockaddr * ai_addr; /* binary address */
            struct addrinfo * ai_next; /* next structure in linked list */
        };
    #endif /* ifndef EAI_ADDRFAMILY */
#endif /* __MINGW32__ */
